photo #6051361

WW2 chemtrails!Well no. They are contrails. Water. They have always existed since the very first aircraft flew. In WW2 it was a problem and the meteorologists would try and predict at what levels they would occur so pilots could avoid those levels (because it makes you really easy to shoot down). Temperature and humidity varies at different altitudes. These variables affect when, and if, contrails appear. Affects how long the contrails are visible. Wind currents move the contrails. 🤗